The National Christmas Tree Lighting Ceremony, held annually on the Ellipse to kick off the holiday season, isn’t until Dec. 6, but if you want to see it the time is now. Free tickets will be awarded through an online lottery, which closes at 10 a.m. Monday. Try your luck by going to www.thenationaltree.org and clicking the “TICKET LOTTERY” link. Those without computer access may call 877-444-6777 (TDD 877-833-6777) to enter. There are 3,000 seated tickets and 14,000 standing-room tickets available. Winners will be notified by email by Thursday.